Compensating device for railroad-signals



(No Model.)

. -J. R. & J. w, JONES. I I GOMPENSATING DEVICE FOR RAILROAD SIGNALS.No. 572,117.

Patented Dec; 1 1896.

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UNITED STATES JOSEPH R. JONES, OF PHILADELPHIA,

PATENT OFFICE.

AND JOSHUA IV. JONES, OF HARRIS- BURG, PENNSYLVANIA, ASSIGNORS OFONE-THIRD TO THOMAS A. JONES, OF PHILADELPHIA, PENNSYLVANIA.

COMPENSATING DEVICE FOR RAILROAD-SIGNALS.

SPECIFICATION forming part of Letters Patent No. 572,117, dated December8 Application filed April 20, 1896.

To all whom it may concern:

Be it known that we, JOSEPH R. JONES, residing in the city and county ofPhiladelphia, and JOSHUA W. JONES, residing at Harrisburg, in the countyof Dauphin, State of Pennsylvania, citizens of the United States, haveinvented a new and useful Improvement in Compensating Devices forRailroad-Signals, &c., which improvement is fully set forth in thefollowing specification and accompanying drawings.

Our invention has relation to compensating devices for railroad-signals,&c.; and it consists in the employment of a chilled cast corrugatedsprocket-wheel and a chilled cast corrugated eccentric pawl having itscorrugations adapted to engage with the corrugations in saidsprocket-wheel, all as will be hereinafter set forth, and specificallypointed out in the claims.

Figure 1 represents a side elevation of a compensating device forrailroad-signals, &c., equipped with the novel features embodying ourinvention. Fig. represents an end elevation of a chilled cast corrugatedwheel employed, having a sprocket-hub; and Fig. 3 represents a portionof Fig. 1 on an enlarged Scale.

Similar letters of reference indicate corresponding parts in the severalfigures.

Referring to the drawings, A designates a portion of the operatingmechanism of a compensating device for railroad-signals, the sameconsisting of the lever D, which is fulcrulned at O to a suitablestandard B, said lever having the lateral arms F and E, upon which theyokes O G are mounted, respectively.

Referring to the right-hand yoke, H designates ears depending therefrom,in which is journaled the chilled cast sprocket-wheel K, which isprovided with the corrugations K, which latter are adapted to be engagedby the corrugations L of the eccentric pawl J, which is fulcrumed insaid yoke G adjacent said sprocket-wheel and is provided with a coun-,terbalance M, the latter having one end of a chain P attached thereto,while the other end of said chain is secured to the flooring Q, especialattention being called to the location 50 of the corrugated face of thepawl J relative Serial No. 588,288. (No model.)

substantially the same as that disclosed in a contemporaneously-pendin gapplication filed by us March 14, 1896, Serial No. 583,254, forcompensating devices for railroad-signals,

'&c., to which reference is herein made for a fuller description of thedetailed operation of the different elements, the present inventionbeingdesigned to protect the employment of a chilled cast corrugatedsprocket-wheel and a chilled cast corrugated pawl, the same beingeccentrically mounted, so that its corrugated face will engage thecorrugations of said wheel when the latter and its pawl. are in elevatedposition. Emphasis is also laid upon the fact that by the employment ofa chilled cast wheel having the corrugations thereon in conjunction witha chilled cast weighted pawl having a corrugated face, eccentricallypivoted with respect to the adjacent corrugated wheel, there is noliability of failure of the wheel to be positively locked by its pawl atthe proper period, and, furthermore, by mounting said pawl eccentricallyupon its fulcrum and weighting it, as indicated, the continued elevationof the desired lever-arm, as F in the present instance, will cause thecorrugated surfaces of the wheel and pawl to become more firmlyinterlocked, the parts being further rendered exceedingly durable bybeing cast chilled, as is evident.

Then an arm, as E, is lowered, the pull on the chain P will cause thedisengagement of the corrugated faces of the pawl and wheel, asindicated at the right of Fig. 1.

It will be evident that although we preferably employ a chilled castwheel and'pawl we do not desire to be limited thereto in every instance.

In the preferred embodiment of our invention the chain S, after passingover the sprocket-hub R, passes under the pulley T, to which the weightV is attached, said chain having its end attached to the clevis U, whichcarries the pulley IV, the latter being supported by means of the chainX, which has one end attached to a suitable fixed point, while its outerend, after passing over a sprocket-hub similar to the hub R, is suitablyconnected to the device which it is desired to operate.

It will be understood that although the description has been principallyconfined to one side of the apparatus the construction of both sides issubstantially identical.

In the preferred embodiment of our invention we employ aplurality ofchains or connections Z, the same having their extremities attached toseparate eyebolts and to a suitable portion of the weight V.

\Ve hereby disclaim the feature of the combination of a signal and of anoperating-lever provided with oppositelyprojecting arms, sprocket wheelsprovided with toothed flanges mounted on said arms, spring-actuated dogsfor engaging the toothed flanges, stops for shifting the dogs when thelever is in normal position, a wire extending from the signal over thesprocket-wheels and back to the signal, and a weight supported by theportion of the wire between the sprocketwheels.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. In a compensating device for railroadsignals, a wheel having acorrugated periphery, a pawl eccentrically mounted adjacent to saidwheel, and having corrugations on its periphery adapted to engage thecorrugations on said wheel, a counterbalance on said pawl, and aconnection from the latter to a fixed point for causing thedisengagement of said pawl and wheel at proper intervals.

2. In a compensating device for railroadsignals, switches, &c., achilled, cast, corrugated wheel having a sprocket-hub, ayoke in whichthe same is rotatably mounted, a chilled, cast, corrugated pawleccentrically mounted adjacent to said wheel, and provided with acounterbalance, a connection from said pawl to a fixed point, and achain passing over said sprocket-hub and adapted to lead to suitableconnections for actuating a signal-arm, switch, to.

In a compensating device for a railroadsignal, a lever having alaterally-projecting arm with a yoke thereon, a wheel journaled in saidyoke and having a corrugated periphery, and a sprocket-hub, a pivotedpawl having a corrugated periphery adapted to engage the corrugatedperiphery of said wheel, a counterbalance on said pawl, and a chain orother connection secured at one end to said pawl and at the other end toa fixed-point, said parts being combined substantially as described.

4. In a compensating device for a railroadsignal, a lever with aprojecting arm, a yoke mounted on said arm, a wheel journaled in saidyoke and having a corrugated periphery and a sprocket-hub, a weightedpawl eccentrically mounted on said yoke and having corrugations adaptedto engage the corrugations of the said wheel, and a chain having one endsecured to said pawl and the other end to a fixed point.

5. In a compensating device for a railroadsignal, an operating-leverhaving laterallyprojecting arms with yokes thereon, wheels and weightedpawls mounted on said yokes, said wheels having peripheral corrugationsand sprocket-hubs, and said pawls having corrugations eccentric to theaxis thereof, a clevis with a pulley journaled thereon, a weight with apulley thereon, a chain secured to said clevis and passing around saidpulley and one of said sprocket-hubs, and connected with a signal, and asecond chain having. one end secured to a fixed point and passing aroundthe clevis-pulley and the other sprocket-hub and connected with the saidsignal.

6. In a compensating device, a chilled cast wheel having a corrugatedperiphery, a support therefor, a chilled cast pawl eccentrically mountedadjacent said wheel, and having corrugations on its periphery adapted toengage the corrugations on said wheel, a connection from said pawl to afixed point, and a chain passing over a suitable portion of said wheel,and adapted to lead to connections for actuating a signal-arm, switch,&c.

7. In a compensating device, a wheel having a corrugated periphery and asprockethub, a pawl eccentrically mounted adjacent to said wheel andhaving corrugations on its periphery adapted to engage the corrugationson said wheel, a counterbalance on said pawl, a connection from thelatter to a fixed point and a chain passing over said sprocket-hub andadapted to lead to connections for actuating a signal-arm, switch, LUC.

JOSEPH It. JONES. JOSHUA \V. JONES. \Vitnesses:

JOHN A. WI DERSHEIM, E. HAYWARD FAIRBANKS.

